package com.songcan.gateway.configuration;

import lombok.extern.slf4j.Slf4j;
import org.springframework.context.annotation.Configuration;
import org.springframework.stereotype.Component;
import org.springframework.web.reactive.function.server.HandlerFunction;
import org.springframework.web.reactive.function.server.ServerRequest;
import org.springframework.web.reactive.function.server.ServerResponse;
import reactor.core.publisher.Mono;

import java.net.URI;
import java.util.Optional;

import static org.springframework.cloud.gateway.support.ServerWebExchangeUtils.GATEWAY_ORIGINAL_REQUEST_URL_ATTR;


/**
 * 全局统一异常
 */
@Slf4j
@Component
public class HystrixFallbackHandler implements HandlerFunction<ServerResponse> {


    @Override
    public Mono<ServerResponse> handle(ServerRequest serverRequest) {
        Optional<Object> originalUris = serverRequest.attribute(GATEWAY_ORIGINAL_REQUEST_URL_ATTR);
        originalUris.ifPresent(originalUri -> log.error("网关执行请求:{}失败,hystrix服务降级处理", originalUri));
//        return ServerResponse.status(HttpStatus.INTERNAL_SERVER_ERROR.value())
//                .contentType(MediaType.TEXT_PLAIN).body(BodyInserters.fromObject("服务异常"));
        return ServerResponse.temporaryRedirect(URI.create("/admin/recovery/fallback")).build();

    }
}
